TOKYO (Reuters) - Japanese Emperor Akihito, 78, will undergo heart bypass surgery on February 18 after a detailed examination found a heart problem had worsened, the Imperial House Agency was quoted as saying on Sunday.
Kyodo news agency, quoting the Imperial Household Agency, said the emperor's blood vessels had narrowed over the past year. He had been treated in hospital in November for cold, fever and symptoms of bronchitis.
The Imperial Household Agency was unavailable for comment.
(Reporting by Chikafumi Hodo; Editing by Ron Popeski)